Supplemental Guarantor Information Supplemental Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2017		Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Cash and cash equivalents	$ 153,959		$ 30,496	$ 29,811	$ 45,874
Restricted cash	88		585
Contracts and accounts receivable	18,321		27,833
Intercompany Receivables	0		0
Due from affiliates	2,062		1,138
Real estate inventories	365,400		286,928
Investment in and advances to unconsolidated joint ventures	55,864		50,857
Investments in Affiliates, Subsidiaries, Associates, and Joint Ventures, Fair Value Disclosure	0		0
Other assets	23,916		21,299
Total assets	619,610		419,136
Accounts payable	34,215		33,094
Accrued expenses and other liabilities	19,473		23,418
Intercompany Payables	0		0
Due to Affiliate	0		0
Senior notes, net	318,121	[1]	0
Unsecured revolving credit facility	0		118,000
Total liabilities	371,809		174,512
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	247,801		244,624	223,545	221,697
Noncontrolling interest in subsidiary	91		101
Total liabilities and equity	619,610		419,136
Stockholders' Equity Attributable to Parent	247,710		244,523
Consolidation, Eliminations [Member]
Cash and cash equivalents	0		0	0	0
Restricted cash	0		0
Contracts and accounts receivable	(1,367)		(1,971)
Intercompany Receivables	(91,737)		(73,972)
Due from affiliates	0		0
Real estate inventories	0		0
Investment in and advances to unconsolidated joint ventures	0		0
Investments in Affiliates, Subsidiaries, Associates, and Joint Ventures, Fair Value Disclosure	(345,376)		(268,411)
Other assets	0		0
Total assets	(438,480)		(344,354)
Accounts payable	0		0
Accrued expenses and other liabilities	(1,358)		(1,942)
Intercompany Payables	(91,737)		(73,972)
Due to Affiliate	(9)		(29)
Senior notes, net	0
Unsecured revolving credit facility			0
Total liabilities	(93,104)		(75,943)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(345,376)		(268,411)
Noncontrolling interest in subsidiary	0		0
Total liabilities and equity	(438,480)		(344,354)
Stockholders' Equity Attributable to Parent	(345,376)		(268,411)
Non-Guarantor Subsidiaries [Member]
Cash and cash equivalents	222		269	344	605
Restricted cash	0		0
Contracts and accounts receivable	7		0
Intercompany Receivables	0		0
Due from affiliates	0		0
Real estate inventories	0		0
Investment in and advances to unconsolidated joint ventures	0		0
Investments in Affiliates, Subsidiaries, Associates, and Joint Ventures, Fair Value Disclosure	0		0
Other assets	0		0
Total assets	229		269
Accounts payable	0		27
Accrued expenses and other liabilities	126		108
Intercompany Payables	0		0
Due to Affiliate	0		0
Senior notes, net	0
Unsecured revolving credit facility			0
Total liabilities	126		135
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	103		134
Noncontrolling interest in subsidiary	91		101
Total liabilities and equity	229		269
Stockholders' Equity Attributable to Parent	12		33
Guarantor Subsidiaries [Member]
Cash and cash equivalents	33,180		13,842	12,805	27,140
Restricted cash	88		585
Contracts and accounts receivable	19,667		29,774
Intercompany Receivables	0		0
Due from affiliates	2,062		1,138
Real estate inventories	365,400		286,928
Investment in and advances to unconsolidated joint ventures	55,864		50,857
Investments in Affiliates, Subsidiaries, Associates, and Joint Ventures, Fair Value Disclosure	0		0
Other assets	8,080		11,918
Total assets	484,341		395,042
Accounts payable	34,105		32,900
Accrued expenses and other liabilities	13,126		19,763
Intercompany Payables	91,737		73,972
Due to Affiliate	9		29
Senior notes, net	0
Unsecured revolving credit facility			0
Total liabilities	138,977		126,664
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	345,364		268,378
Noncontrolling interest in subsidiary	0		0
Total liabilities and equity	484,341		395,042
Stockholders' Equity Attributable to Parent	345,364		268,378
Parent Company [Member]
Cash and cash equivalents	120,557		16,385	$ 16,662	$ 18,129
Restricted cash	0		0
Contracts and accounts receivable	14		30
Intercompany Receivables	91,737		73,972
Due from affiliates	0		0
Real estate inventories	0		0
Investment in and advances to unconsolidated joint ventures	0		0
Investments in Affiliates, Subsidiaries, Associates, and Joint Ventures, Fair Value Disclosure	345,376		268,411
Other assets	15,836		9,381
Total assets	573,520		368,179
Accounts payable	110		167
Accrued expenses and other liabilities	7,579		5,489
Intercompany Payables	0		0
Due to Affiliate	0		0
Senior notes, net	318,121
Unsecured revolving credit facility			118,000
Total liabilities	325,810		123,656
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	247,710		244,523
Noncontrolling interest in subsidiary	0		0
Total liabilities and equity	573,520		368,179
Stockholders' Equity Attributable to Parent	$ 247,710		$ 244,523

[1] (1) The carrying value for the Senior Notes, as presented, is net of the unamortized discount of $2.5 million, unamortized premium of $2.0 million, and $6.4 million of debt issuance costs. The unamortized discount, unamortized premium and debt issuance costs are not factored into the estimated fair value.